Chinese Journal of Epidemiology, , Issue 10,2014, Pages 1099-1104, doi:10.3760/cma.j.issn.0254-6450.2014.10.005
Chinese Journal of Epidemiology, , Issue 10,2014, Pages 1109-1114, doi:10.3760/cma.j.issn.0254-6450.2014.10.007
Chinese Journal of Epidemiology, , Issue 10,2014, Pages 1164-1168, doi:10.3760/cma.j.issn.0254-6450.2014.10.020
Chinese Journal of Epidemiology, , Issue 10,2014, Pages 1127-1130, doi:10.3760/cma.j.issn.0254-6450.2014.10.011